Havelock is a small town in the Marlborough Region of New Zealand, at the head of Pelorus Sound, one of the Marlborough Sounds, and at the mouth of the Pelorus and Kaituna Rivers

State Highway 6 from Nelson to Blenheim passes through the town. Queen Charlotte Drive, which provides a shorter but very winding road to Picton proceeds east along the edge of the Sounds. Canvastown lies 10 kilometres (6.2 mi) to the west. Renwick is 31 km (19 mi) to the south. Picton lies 35 km to the east.

Havelock serves as the centre for much of the New Zealand green-lipped mussel industry, and promotes itself as the greenshell mussel capital of the world. It also functions as the base for a mail boat servicing the remote communities in the Marlborough Sounds, as well as for many fishing and recreational boats.

The name "Havelock" commemorates Sir Henry Havelock (1795-1857), known from the Siege of Lucknow during the Indian Rebellion of 1857. The streets were laid out in 1858, with Lucknow Street as the main thoroughfare. The gold rush to the Wakamarina Valley in 1864 boosted the growth of the township, with sawmilling becoming the main activity until the 1910s, later joined by dairying. The valleys around Havelock contain many pine plantations.

Across the Kaituna River estuary, the Cullen Point Scenic Reserve and the Mahakipawa Hill Scenic Reserve offer a coastal walking-track to a lookout at Cullen Point.

Havelock is defined by Statistics New Zealand as a rural settlement. It covers 1.76 km (0.68 sq mi) and had an estimated population of 640 as of June 2024, with a population density of 364 people per km. It is part of the larger Marlborough Sounds West statistical area.

Historical population for Havelock

Year	Pop.	±% p.a.
2006	510	—
2013	507	−0.08%
2018	588	+3.01%
Source:

Before the 2023 census, the settlement had a smaller boundary, covering 1.67 km (0.64 sq mi). Using that boundary, Havelock had a population of 588 at the 2018 New Zealand census, an increase of 81 people (16.0%) since the 2013 census, and an increase of 78 people (15.3%) since the 2006 census. There were 234 households, comprising 306 males and 279 females, giving a sex ratio of 1.1 males per female, with 84 people (14.3%) aged under 15 years, 75 (12.8%) aged 15 to 29, 273 (46.4%) aged 30 to 64, and 150 (25.5%) aged 65 or older.

Ethnicities were 83.7% European/Pākehā, 15.8% Māori, 2.0% Pasifika, 5.6% Asian, and 4.1% other ethnicities. People may identify with more than one ethnicity.

Although some people chose not to answer the census's question about religious affiliation, 58.7% had no religion, 26.5% were Christian, 2.0% had Māori religious beliefs, 2.0% were Buddhist and 0.5% had other religions.

Of those at least 15 years old, 60 (11.9%) people had a bachelor's or higher degree, and 117 (23.2%) people had no formal qualifications. 57 people (11.3%) earned over $70,000 compared to 17.2% nationally. The employment status of those at least 15 was that 249 (49.4%) people were employed full-time, 72 (14.3%) were part-time, and 9 (1.8%) were unemployed.

Marlborough Sounds West, which also includes Rai Valley and Ōkiwi Bay, covers 1,557.89 km (601.50 sq mi) and had an estimated population of 2,230 as of June 2024, with a population density of 1.4 people per km.

Historical population for Marlborough Sounds West

Year	Pop.	±% p.a.
2006	1,890	—
2013	1,806	−0.65%
2018	1,986	+1.92%
Source:

Marlborough Sounds West had a population of 1,986 at the 2018 New Zealand census, an increase of 180 people (10.0%) since the 2013 census, and an increase of 96 people (5.1%) since the 2006 census. There were 816 households, comprising 1,017 males and 966 females, giving a sex ratio of 1.05 males per female. The median age was 48.3 years (compared with 37.4 years nationally), with 345 people (17.4%) aged under 15 years, 252 (12.7%) aged 15 to 29, 933 (47.0%) aged 30 to 64, and 459 (23.1%) aged 65 or older.

Ethnicities were 90.9% European/Pākehā, 13.1% Māori, 1.8% Pasifika, 2.4% Asian, and 2.4% other ethnicities. People may identify with more than one ethnicity.

The percentage of people born overseas was 15.6, compared with 27.1% nationally.

Although some people chose not to answer the census's question about religious affiliation, 58.8% had no religion, 29.0% were Christian, 0.6% had Māori religious beliefs, 0.9% were Buddhist and 1.7% had other religions.

Of those at least 15 years old, 180 (11.0%) people had a bachelor's or higher degree, and 405 (24.7%) people had no formal qualifications. The median income was $27,900, compared with $31,800 nationally. 189 people (11.5%) earned over $70,000 compared to 17.2% nationally. The employment status of those at least 15 was that 762 (46.4%) people were employed full-time, 279 (17.0%) were part-time, and 30 (1.8%) were unemployed.

Havelock School is a coeducational full primary school (years 1-8), with a roll of 67. The school was founded in 1861.

• William Pickering, space scientist and former director of NASA's Jet Propulsion Laboratory
• Ernest Rutherford, Nobel Prize-winning physicist

• Moenui

• Havelock School website
• Havelock Community Association website
• Havelock Community and Information Website
• Havelock Info Centre Archived 2008-06-26 at the Wayback Machine